JPH0571453B2 - - Google Patents

Abstract

An inlet applying roller (3) and an outlet applying roller (15) are elastically urged to project, at rest, from a casing (1) which may be fixed to a sealing machine. The inlet applying roller (3) is rotatably supported by support arms (6), which are movable along path defined by shaped windows (21) engaged with a fixed pivot (22), and the outlet applying roller (15) is rotatably supported by lever arms (13) rotatable about a fixed fulcrum (16). Said support arms (6) for the inlet rollers (3, 15) are kinematically connected to the support lever arms (13) of the outlet roller (15) so that the withdrawal movement of the inlet roller (3) is accompanied by a simultaneous withdrawal movement of the outlet roller (15) and the successive coming-out movement of the inlet roller (3) is made dependent on a simultaneous coming-out movement of the outlet roller (15). A cutting blade (37) is arranged between said rollers (3, 15) to cut the tape between subsequent cartons.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic taping device for a carton sealing machine, and more particularly to an improved automatic taping device with a tape adhesion actuation roll retraction motion actuation mechanism.

[Conventional technology]

Various carton sealing machines are known that apply sealing adhesive tape along the top and bottom walls of a carton (cardboard containers such as cardboard boxes) after folding the lid.

These machines are located along the rest plane, one below the carton transport path and the other above it, and the transported carton automatically pulls out a tape section of exact length, which can be cut or An automatic taping device (unit) appropriately designed to apply the tape is used.

In the prior art taping unit, one is disposed at the inlet and the other at the outlet, and the taping unit and the carton transfer path are elastically protruded outward from the outer shape or upper end surface. It has two operating rolls made of rubber material or the like that are configured to be able to return to the inside of the upper end surface during passage. Between these rolls, with respect to the casing of the taping unit, there are also cutting blades of similar return or recessed and protruding configuration as the working rolls.

The entry roll applies the first section of tape to the front wall of the carton, and then is returned by the carton to the inside of the top surface of the taping unit.
Its function is to ensure that the trailing portion of the tape drawn by the carton is fed along the horizontal wall (top or bottom) adjacent to the front wall of the carton and up to the rear wall of the carton. The exit roll has the function of allowing the final length of tape to be applied to the rear wall of the carton as the carton passes through and projects from the top surface of the taping unit. After passing the transported carton, the cutting blade cuts the tape between the first carton and the next transported carton, cutting the tape between the last length of tape and the first length for the next carton. It has the function of determining the length of.

With such known taping units, it is possible to completely adhere the first and last parts of the adhesive tape to the front and rear walls of the carton, respectively, while at the same time avoiding the risk of poor transport and damage to the carton. There are problems with retraction or indentation and protrusion movements of the inlet and outlet rolls, ie the tape adhesion actuating rolls, which need to be able to avoid risks.

[Problem to be solved by the invention]

In view of this, the object of the present invention is to provide an automatic carton sealing machine with a retracting or invading and protruding movement drive mechanism for two taping actuating rolls, capable of fulfilling the above requirements. The objective is to realize a taping device.

[Means to solve the problem]

In order to achieve the above object, an automatic taping device according to the present invention has a casing that can be fixedly attached to a carton sealing machine along a carton transfer path, and a front end of a carton to be transferred engages with the casing, thereby elastically sealing the casing. An inlet roll and an outlet roll are driven to protrude outward from the upper end surface and retract inward thereof, and the free end of the adhesive tape can be operated to contact the inlet roll when at rest, thereby The adhesive tape is engaged with the front wall of the carton in the direction of travel so that it is pulled by the adhesive force as the carton travels, and then the adhesive tape is pulled against said front wall of the carton as its free end is pulled. an adhesive tape supply configured to slide over an inlet roll over a horizontal wall adjacent to the part; and drive means disposed between the inlet roll and the outlet roll; , before the front wall of the carton reaches there, it is returned to the inside of the upper end surface of the casing, and after passing the rear wall of the carton and before its horizontal wall passes through the exit roll, it is returned to the inlet part. An automatic taping device having a cutting blade configured to cut adhesive tape between a roll and an exit roll, wherein the entrance roll is guided through a curved window that engages a fixed pivot. The window is supported by a pair of movable arm members configured to perform a backward movement, and the window has a lower portion that is largely inclined with respect to the horizontal plane, and an intermediate portion that is slightly inclined with respect to the horizontal plane compared to this lower portion. and a substantially vertical upper portion.

According to this configuration, the inlet tape application actuating roll (mainly referred to as inlet roll) has a steep slope that allows the first length of the adhesive tape to be accurately adhered to the front wall of the carton. an initial retraction or invagination movement having a motion component of Therefore, it is possible to pass the carton through the boundary corner between the front wall of the carton and the horizontal wall adjacent thereto without the risk of transport failure and damage to the carton caused by this. In particular, there is no problem even if the bottom wall of the carton has an expanded portion.

Another feature of the taping device according to the invention is that a pair of movable arm members supporting the inlet roll are kinematically connected to a pair of lever arms supporting the outlet roll, so that the advancing carton At the same time, as the entrance roll moves backward guided by the curved window due to the thrust exerted by the lever arm, the exit roll simultaneously moves backward through rotation about the fixed fulcrum member of the pair of lever arms. Also, the next projecting movement of the inlet roll to project the upper end surface of the casing to the outside occurs simultaneously with the projecting movement of the exit roll after passing the horizontal wall of the carton. The point is that it is structured.

Furthermore, according to the present invention, the position of the fixed fulcrum member around which the tape application roll (mainly referred to as the exit roll) at the exit part rotates is as follows:
The exit roll is given a protruding pivoting motion consisting predominantly of a horizontal motion component so that, following the progress of the transported carton, the exit roll deposits the last length of tape against the bottom wall of the carton. The selection settings are made to allow for accurate adhesion.

Furthermore, according to the invention, the supply of adhesive tape has a series of tape guide and tension rolls upstream of the inlet roll in the direction of travel of the transported carton, at least one of the rolls being 1
The cutting blade is supported by movable means associated with the driving means of the cutting blade, and tensions the adhesive tape when the cutting blade returns inward to the upper end surface of the casing, and also connects the driving means to the cutting blade in order to cut the tape. An arrangement is also provided for loosening the tape when controlling the subsequent ejection movement of the.

This configuration ensures that the tape is accurately taut and then untensioned immediately after the cut, thereby preventing tape edges from being overly tensioned after the tape has been cut. The need to reposition the parts is avoided.

Further, the series of tape guide and tension rolls described above has a unidirectional guide roll downstream of the guide roll supported by the movable arm member in the downstream direction in the carton traveling direction, and this roll has an inlet roll. An arrangement is also provided in which it is located in such a way that it gradually approaches it during its backward movement.

According to this configuration, during the backward movement of the entrance roll, the tension in the tape section between this roll and the unidirectional guide roll is relaxed, so that the carton overcomes the initial resistance by the entrance roll and then resists the resistance due to the tension of the tape. This has the important effect of avoiding the need to overcome the On the other hand, after the retraction movement of the inlet roll has been completed, the advancing carton absorbs the excess portion of the adhesive tape downstream of the unidirectional guide roll and brings the tape back under precise tension. Therefore, the resistance on the carton is controlled and the risk of carton jamming and damage, which is likely to occur especially during delicate working steps past the inlet roll during retraction movement, is reduced.

Finally, it is very important to keep the free end of the tape always positioned in a constant position on the entrance roll, in order to ensure that all of the successively sealed cartons are provided with a first tape section of the same length. is important. On the other hand, when using adhesive tapes with different elasticities, the degree of elongation of the tapes tends to vary when tension is applied to attach the tapes to cartons; may become loose and the position of the free end of the tape on the entry roll may vary.

In order to solve this problem in a satisfactory manner, according to the invention, a unidirectional guide roll is rotatably mounted on a support pivot, which pivot is provided with an eccentric pivot and which is also connected to the support pivot. An arrangement is provided with means for changing the angular position of the guide roll with respect to the eccentric pivot.

According to this configuration, it is possible to change the distance between the guide roll and the entrance roll during the rest period so as to take into account the difference in the degree of elongation of the tapes used and to make necessary corrections.

〔Example〕

BRIEF DESCRIPTION OF THE DRAWINGS The various structural features, advantages, and advantages of the present invention will become more apparent from the following description of embodiments of the invention, which are shown by way of example only in the accompanying drawings.

Referring to FIGS. 1 and 2 showing the overall view of the apparatus and FIGS. 3 to 5 showing partial views thereof, the automatic taping apparatus according to the embodiment of the present invention shown in these figures has two It has a casing 1 formed by parallel side walls 2 (connected by a cross member 47), between which the various components and drive mechanisms of the device are accommodated and supported.

One of the various members is an inlet tape application roll or inlet roll 3 made of a rubber material, etc., which is attached to a protruding end 5 of a pair of parallel movable arm members or arm members 6. Installed pivot 4
is rotatably supported. The arm members 6,6 are connected by a transverse member 46 and have a slot or window 21 in which a fixed pivot 22 engages.
is formed. The other end of the arm member 6 is pivotally supported together with the end of a T-shaped lever member 8 at a hinge portion 7 . The lever member 8 has a fixed fulcrum member 9 extending between the side walls 2, 2 of the casing 1, and at its other end is slidable into a linear slot or window 12 in a pair of lever arms 13. A pin 10 with an inserted roller 11 is provided. The lever arm 13 supports a support pivot 14 for the outlet actuating roll or the inlet roll 3 made of a rubber material or the like, and has a fixed fulcrum member 16 to which the lever arm 13 is attached. A crank arm 17 is supported integrally with the crank arm 17. crank arm 17
A spring 19 is adjustable and locked by a screw clamp 20 by means of a support pin 18.

Due to the action of the spring 19, the inlet roll 3 and the outlet roll 15 in the above-mentioned structural part are made to protrude outward from the outer shape of the casing 1 or its upper end surface, and at the same time, the transported cartons 59 ( Both rolls 3 and 15 can be returned to the inside of the upper end surface by the thrust shown in FIG. 11). During this return movement, the entrance roll 3
moves according to the shape of the lower part 23, middle part 24 and upper part 25 of the curved window 21, following a path that first has a steep slope, then a gentler slope, and finally an almost vertical slope; The exit roll 15 moves according to a curved path with a large radius defined by the rotation of the lever arm 13 about the fixed fulcrum member 16.

Brushes 26 and 27 are fixed to the projecting ends 5 of the parallel arm members 6, 6 and the T-shaped lever member 8, respectively, for purposes described below. For the same purpose, a brush 28 is also attached to an elastic blade 29 extending from a bracket 30 fixed to the casing 1.

Also between the side walls 2, 2 of the casing 1 is a first
A pivot 31 for pivoting a pair of lever members 32, 32 of the lever means is also supported. The lever member 32 has a vertical window 42 in which the fixed pivot 22 engages, and a pair of lever members 34, 34 of the second lever means are pivotally mounted on the same member 32 by a shaft 33. These lever members 34 are connected to the plate member 3 to which the cutting blade 37 is fixed by appropriate means 36.
5 is supported. As is particularly clear in FIG. 1, a pair of wire springs 38 extend along the side wall 2 of the casing 1 until reaching a horizontal pin 41 (FIG. 4), and a pair of lever members 34 and a follower The other pair of lever members 32 are elastically urged upward via the lever shaft 33. The elastic load of the wire spring 38 can be adjusted by a locking clamp 39 that can be selectively inserted into and engaged with any one of the plurality of holes 40. Vertical window 42 length and axis 3
3, the operating portion 43 of the lever member 32 and the operating portion 44 of the lever member 34 are normally placed in the casing 1.
The elastic stress is appropriately selected and set so as to obtain an elastic stress that maintains the upper end surface outward. When the operating parts 43 and 44 are in the normal state as described above, the cutting blade 37
is maintained inside the outer shape or upper end of the lever member 32, and is housed and protected by a protection member 45 formed integrally with the lever member 32 and made of, for example, a bar.

An adhesive tape supply section is provided in combination with the above-described mechanism or structure. As shown in FIG. 1, this supply section includes a roll 4 rotatably supported by an arm member 50 extending downward from the casing 1.
It has a function of unraveling the adhesive tape 48 one after another from 9 onwards. The roll 49 is rotatably supported by a lever arm 52 with a shaft 53 on the casing 1 as a fulcrum, and is subjected to the elastic stress of a spring 54 (with a side wall 71). The pressure is starting to build. Once unwound from roll 49, tape 48 is redirected passing around roll 51;
It is then passed successively around the guide rolls 55, 56, 57 and 58 until its tip or free end reaches the region of the inlet roll 3.

The guide roll 55 is provided with a side wall 82 for positioning the tape.
As shown in FIGS. 12, 13, and 14, the levers are attached to lever members 32, 32 so as to be movable circularly about a rotation pivot 31. The purpose and effects of this configuration will be described later.

The guide roll 56 is a one-way clutch type or one-way guide type roll, and is located further forward of the entrance roll 3 in the traveling direction of the sealed carton (the direction indicated by arrow F in FIG. 11). The driven rolls 57 and 58 are supported by a lever arm 6 which also supports the inlet roll 3. As shown in FIGS. 11 and 12 and described again later, with this configuration, when the inlet roll 3 moves back inward toward the upper end surface of the casing 1 due to the thrust of the transported carton, It becomes possible to gradually approach the guide roll 56 until the guide roll 56 and the inlet roll 3 are completely hidden inside the upper end surface of the casing 1 (FIG. 12). It becomes possible to loosen the tape portion between the rolls 3. In this way, with the entrance roll 3 still engaged with the front end of the carton, tensioning of the tape is avoided and the tape is prevented from being under tension from the engagement of the outwardly projecting entrance roll and the roll 49. The dual engagement with the taut tape engagement which resists unwinding of the carton avoids exposing the carton to dangerous stresses.

As shown in FIG. 6, the guide roll 56 also has the feature that it is supported by a support pivot 60 via a free wheel mechanism 65 (FIG. 8). This support pivot 60 is connected to the trunnion 6
1 to the side wall 2 at the center of the rotating disk 62 in an eccentric manner. Rotating disk 62
is also fixed to the support pivot 60 by an eccentric or locking screw 63 inserted into an arcuate window 64 (FIG. 7) in the side wall 2. Therefore, the guide roll 56 can be selectively positioned at the position shown by the solid line in FIG. 6, the position shown by the dashed-dotted line in FIG. It is possible. The purpose of having such a configuration in which the position can be changed will be described later. Of course, effects similar to those achieved by this configuration can also be obtained by translational movement of the support pivot 60, rather than by eccentric rotation.

Finally, the illustrated taping device is equipped with a cutting device capable of cutting the tape and placing its free end precisely in position in contact with the entrance roll 3.

As can be seen in FIGS. 1, 9 and 10, the cutting device consists of a cutting blade 66 supported by an inverted U-shaped frame member 67, which is connected to the pivot or It is rotatably supported by a rotation pin 4. The protrusion 68 of the frame member 67 is
In order to set the cutting position of the cutting blade 66 shown in FIG. 9, it can engage with a fixed abutment member 69 supported by one end 5 of the arm members 6, 6.
The rest position of the cutting blade 66 is diametrically opposite to the position shown in FIG.

To understand the operation of the illustrated automatic taping device, it is assumed that the device is inserted into a suitable space on the carton transfer surface in a known carton sealing machine. With all parts and mechanisms of the device still in the rest position shown in FIG.
8. Perform positioning. This unwinds the tape 48 from the roll 49 and takes it out from the positioning roll 51, guide rolls 55, 56, 57 and 58.
and finally the tip (as shown in Figure 9, there is first a "leading extension" 70)
is formed) near the entrance roll 3. Next, the cutting blade 66 is set at the cutting position shown in FIG. The length of the tape to be attached to the front wall of the tape is set appropriately to be equal to the desired height, and the tape is cut by hand. As the cutting blade 66 is gradually returned to its rest position shown in FIG. 1, the non-adhesive side of the cut end of the tape approaches the entrance roll 3 as shown in FIG. Preparation for sealing using the taping device is now complete.

The carton is transported in a known manner until it reaches the taping device and is located on a rest surface flush with the top of the casing 1. At the entrance of the taping device, the carton is first supported on a support roll 71 (FIG. 11) supported by the casing and then transported along the top edge of the side wall 2 (FIGS. 12 to 14). .

When the front wall 72 of the carton 59 reaches the entrance roll 3, the various mechanisms of the taping device begin to operate. At this point, the free end of the adhesive tape 48 is applied with its adhesive side to the front wall 72 of the carton, the resistance of the entrance roll 3 against the advancement of the carton 59 being used for this purpose.

As the carton continues to advance, the length of the tape adhering to the front wall of the carton increases and approaches the lower end 73 (FIG. 11) of the front wall of the carton, simultaneously propelling the carton as it continues to advance. The force causes the inlet actuating roll 3 to move, against the force of the spring 19, first through the steeply inclined retraction path defined by the lower part 23 of the window 21 of the arm member 6, and then by the intermediate part 24 of the window 21. Make a backward movement along a prescribed relatively gently sloped backward path. In this way, the entrance roll 3 first moves according to the initial length of the tape along the front wall of the carton and then performs a retracting or invading movement following the forward movement of the carton. Arm member 6
Due to the kinematic connection between the T-shaped lever member 8 and the latter 8 and the lever arm 13, the exit roll 15 and the lever arm 13 simultaneously move with the retraction movement of the inlet roll.
Rotation about the fixed fulcrum member or pivot 16 causes the retracting or retracting movement.

As can be seen in FIG. 11, when the inlet roll 3 performs a backward movement, it approaches the unidirectional guide roll 56 to some extent, so that it is located between these rolls 3 and 56. The length of the tape becomes loose, which avoids a situation where the advancing carton has to overcome resistance to it and therefore is subject to the stress of the taut tape. Ru. In this way, there is no risk of the carton being damaged or of the tape slipping along the walls of the carton.

When the carton is further advanced (first
2), the adhesion of the first length of tape to the front wall of the carton has been completed, and the inlet roll 3 is still under thrust from the front end of the carton and is attached to the contour or top surface of the casing 1. The inwardly retracting movement of the outlet roll 15 is also completed, as is the retracting movement of the outlet roll 15 through the shaped path. Since the upper part 25 of the window 21 of the arm member 6 is substantially vertical, the last part of the retraction movement of the inlet roll 3 will likewise be substantially vertical, so that this roll 3
can pass rapidly through the lower front wall 73 of the carton and can position itself below the lower or bottom wall 74 of the carton. Therefore, at this time, the generation of a large resistance having a horizontal component that may cause a "collision" of the lower end 73 of the front wall of the carton against the inlet roll 3 is avoided, and therefore, especially the bottom wall of the carton is Inadequate feeding and/or damage to the carton, which tends to occur when the carton is in an expanded state, is also avoided. At this stage, the carton continues to be pulled on the adhesive tape 48 and
Remove the excess tape that caused the loosened state shown in the figure and return the tape to its tensioned state.

As the carton advances further, the resulting tension causes the tape to be unwound one after another from the roll 49. Bottom wall of the carton (a wall formed by folding the four folded sides of the carton inward so that a longitudinal groove to which the adhesive or sealing tape 48 is applied is formed in the center) The length of the tape that adheres to the brush gradually increases, but the tape slides freely on the inlet roll 3 and the outlet roll 15, is appropriately pressed by these rolls, and is further pressed against the brush 2.
8, 27 and 26. The engagement of the bottom wall of the carton with the actuating parts 43 and 44 of the lever members 32 and 34 completes the retraction or intrusion movement of the lever members into the upper end surface of the casing 1. This state is shown in FIG. 13. At this time, the distance between the guide roll 55 supported by the lever member 32 and the fixed guide roll 56 is increased, so that the entrance roll 3 and the exit roll 15 are increased. The tape 48 located in the area between the two ends is under appropriate tension.

Nothing happens when the bottom wall of the carton leaves the inlet roll 3, and this roll 3 is removed from the exit roll 15 (the first
4) and is maintained in the retracted position. However, when the rear wall lower end 75 of the carton releases the actuating part 43 of the lever member 32, the spring 38 immediately causes the lever member 32 to protrude outward from the upper end surface of the casing 1, and the lever member 32 is actuated by the bottom wall of the carton. The shaft 33 is moved while the portion 44 is kept stationary, and the lever member 34 is further rotated about the shaft 33. As a result, the cutting blade 37 performs a rotational movement that is a combination of the rotational force about the rotational pivot 31 and the rotational force about the shaft 33, that is, a rapid rotational movement that is the sum of the rotational forces of the lever members 32 and 34. The casing 1 moves through the protective member 45 to generate a doubled speed.
The upper end surface of the lever member 32 protrudes outward to reach the adhesive tape 48 between the inlet roll 3 and the outlet roll 15 and cuts it, thereby cutting the adhesive tape 48 between the actuating part 43 and the cutting blade 37. Defines the length of the rearmost part of the tape for a given value, which is equal to the distance . On the other hand, by appropriately selecting the position of the cutting blade 37 between the cutting point and the unidirectional guide roll 56, a first
A length of the tape is defined which can be equal to the initial length of the tape defined between the illustrated guide roll 56 and the entrance roll 3 in the rest position. The state during the cutting operation is shown in FIG. 14, but as the guide roll 55 returns from the position shown in FIG. 13 together with the lever member 32 to the position shown in FIG. 14, the tape becomes loose.
It is now possible to bring the cut end to the optimum position for the next taping.

As is clear from FIG. 15, when the bottom wall of the carton releases the outlet roll 15, the roll 1
5 protrudes outward from the upper end surface of the casing together with the inlet roll 3, and immediately after that, when the bottom wall of the carton also releases the actuating part 44 of the lever member 32, the cutting blade 3
7 can be returned to its normal rest position protected by the protection member 45. Exit roll 15
carries the rear end of the adhesive tape along the rear wall 76 of the carton when the casing is projected outwardly from the top surface thereof, causing it to adhere precisely. For this reason, the position of the fixed fulcrum member 16 and the shape of the lever arm 13 are
The selected setting is such that a strong horizontal motion component is imparted to the exit roll 15, allowing accurate application of the tape to the rear wall following the last part of the carton's forward movement. The entrance roll 3 returns to its rest position (FIG. 15) and moves away from the unidirectional roll 56 so that the first section of cut tape slides around the roll 3 and the tape is removed. The free end of is positioned exactly in the initial position shown in FIG. In this way, the taping device is ready for the next carton sealing operation.

Even if the free end of the tape is placed in the initial position shown in FIG. 1, the physical properties of the tape, especially its elasticity, are different and the tape is unwound from the roll 49 during the tape withdrawal operation performed by the carton. length and unidirectional guide roll 5
The overall length of the tapes from 6 to 6 may differ, in which case at the end of the work,
The tape can no longer be taut and the positioning of the free end of the tape on the entry roll 3 will be different and inaccurate. In order to eliminate this fear, in the taping device of the present invention, depending on the type of tape used, the guide roll 56, or more precisely the eccentric screw 63, can be adjusted to change its position with respect to the trunnion or eccentric pivot 61. Things are getting better. With this configuration, as shown in FIG. 6, the length of the tape between the guide roll 56 and the entrance roll 3 when stationary can be adjusted to the tensioned state and loosened state that occur one after another in the tape shown in FIG. You can take this into account and change it accordingly.

〔Effect of the invention〕

As mentioned above, according to the invention, the entrance roll has a first retraction with a steep component of motion that makes it possible to precisely adhere the first length of the adhesive tape to the front wall of the carton. or completes its retreating motion by an invaginating motion followed by a retracting or invaginating motion with a relatively large horizontal motion component, but the vertical displacement is substantial so that the front wall of the carton and It is possible to pass through the boundary corner of the horizontal wall adjacent to the horizontal wall without fear of transport failure and damage to the carton caused by this. In particular, there is no problem even if the bottom wall of the carton has an expanded portion.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an automatic taping device according to the invention. FIG. 2 is a plan view of the taping device. Figure 3 is the − of Figure 1.
FIG. FIG. 4 is an enlarged cross-sectional view taken along the - line in FIG. 1. FIG. 5 is an enlarged cross-sectional view taken along line V-V in FIG. 1. FIG. 6 is a partially detailed view showing the initial adjustment state of the tape feeding operation. FIG. 7 is an enlarged partial view of a portion of the apparatus. Figure 8 shows the 7th
FIG. 3 is a sectional view taken along the - line in the figure. FIG. 9 is an explanatory diagram for explaining the first operation of cutting the tape. FIG. 10 is an enlarged partial cross-sectional view taken along line XX in FIG. 9. Figures 11 to 15 are
FIG. 3 is a respective longitudinal sectional view showing various working states of the automatic taping device; DESCRIPTION OF SYMBOLS 1... Casing, 3... Entrance roll (tape application roll at the entrance), 6... Movable arm member (or simply arm member), 8... (T-shaped) lever member, 10... Pin , 12... (linear) window, 1
3... Lever arm, 15... Outlet roll (tape sticking operation roll at the exit part), 16... Fixed fulcrum member,
21... (curved state) window (23... lower part,
24... middle part, 25... upper part), 22...
... fixed pivot, 32, 34, 38 ... driving means (32 ... first lever member, 34 ... second lever member, 38 ... wire spring), 37 ... cutting blade, 4
8... Adhesive tape, 51, 55, 56, 57, 5
8... Adhesive tape supply unit (51... Take-out positioning roll, 55, 56, 57, 58... Guide roll or tape guide and tension roll), 59...
Carton, 60... Support pivot, 63, 64...
...Angular position conversion means (63...locking screw or eccentric screw, 64...circular window).

Claims (1)

[Claims] 1. The casing 1, which can be fixedly attached to the carton sealing machine along the transfer path of the carton 59, and the front end of the carton to be transferred are engaged with each other, so that the outer part of the upper end surface of the casing 1 is elastically attached. The entrance roll 3 and the exit roll 15 are driven to protrude and retract inward, and the free end of the adhesive tape 48 can be brought into contact with the entrance roll 3 when the adhesive tape 48 is at rest. tape 48 to carton 59
The adhesive tape 48 is engaged with the front wall of the carton 59 in the traveling direction so that it is pulled by the adhesive force as the carton 59 advances, and then the adhesive tape 48 is applied to the front wall of the carton 59 as its free end is pulled. an adhesive tape supply unit 51 configured to slide over the inlet roll 3 so as to span the horizontal wall adjacent to the
55, 56, 57, 58, and are provided between the inlet roll 3 and the outlet roll 15, and drive means 32,
34, 38, by means of which the carton 59 is returned to the inside of the upper end surface of the casing 1 before the front wall reaches there, and after passing the rear wall of the carton 59 and the rear wall thereof. Automatic taping device of a carton sealer having a cutting blade 37 configured to cut the adhesive tape 48 between the inlet roll 3 and the outlet roll 15 before the horizontal wall passes through the outlet roll 15 The inlet roll 3 is supported by a pair of movable arm members 6, 6 which are adapted to perform a backward movement guided by a curved window 21 engaging a fixed pivot 22; The window 21 has a lower part 23 which is largely inclined with respect to the horizontal plane, and an intermediate part 24 which has a slight inclination with respect to the horizontal plane compared to this lower part.
and a substantially vertical upper portion 25. 2. The pair of movable arm members 6, 6 for the inlet roll 3 are kinematically connected to the pair of lever arms 13, 13 for the outlet roll 15, so that the moving cartons 59 are As the inlet roll 3 moves backward due to thrust and guided by the curved window 21, the outlet roll 15 simultaneously rotates about the fixed fulcrum member 16 of the pair of lever arms 13, 13. The next projecting movement performed by the inlet roll 3 to project the upper end surface of the casing 1 outward is the protrusion performed by the exit roll 15 after the carton 59 has passed through the horizontal wall. The automatic taping device for a carton sealing machine according to claim 1, wherein the automatic taping device for a carton sealing machine is configured to occur simultaneously with the movement. 3. The position of the fixed fulcrum member 16 is selectively set so as to impart to the outlet roll 15 a protruding rotational movement consisting predominantly of a horizontal movement component. carton sealing machine automatic taping equipment. 4 Movable arm members 6, 6 that support the entrance roll 3
and lever arms 13, 13 that support the exit roll 15.
said kinematic connection between said kinematics has a fixed fulcrum member 9 which is rotatably connected at one end to the adjacent end of said movable arm members 6, 6 and at the other end said lever arm. 13, 13 through T-shaped lever members 8, 8 having pins 10 slidably engaged in the straight windows 12, 12. The automatic taping device of the carton sealing machine described. 5 The adhesive tape supply section 51, 55, 56, 5
7 , 58 have a series of tape guide and tension rolls 55 , 56 , 57 , 58 upstream of the inlet roll 3 in the direction of carton transport progress, at least one of which rolls 55 is connected to the cutting blade 37 . When the cutting blade 37 returns to the inside of the upper end surface of the casing 1, it tensions the adhesive tape 48, and is supported by the movable means combined with the drive means 32, 34, 38 of 32,3
4. An automatic taping device for a carton sealing machine as claimed in claim 1, characterized in that 4, 38 are arranged to loosen the tape when controlling the next ejection movement of the cutting blade. 6 Drive means 32, 34, 38 for the cutting blade 37
However, when the inlet roll 3 retreats inward to the upper end surface of the casing 1 and the carton 59 passes through the position of the roll 3 and is at a position before passing the outlet roll 15, the carton 59 is engaged. It has a pair of lever members 32, 32, and the at least one
6. The automatic taping device for a carton sealing machine according to claim 5, wherein the movable means for supporting the guide rolls 55 are the pair of lever members 32, 32. 7 the series of tape guide and tension rolls 55;
56, 57, 58 have a further guide roll 56 downstream of said at least one guide roll 55 in the direction of carton transport progress, which roll 56 is connected to the inlet roll 3 during its retraction movement. The automatic taping device for a carton sealing machine according to claim 5, wherein the automatic taping device for a carton sealing machine is arranged at positions that gradually approach each other. 8. The automatic taping device for a carton sealing machine according to claim 7, wherein the guide roll 56 is a unidirectional member. 9 The guide roll 56 is rotatably attached to the support pivot 60, and the support pivot 60
0 is provided with an eccentric pivot 61 and means 6 for changing the angular position of the support pivot 60 and the guide roll 56 with respect to the eccentric pivot 61.
8. The automatic taping device for a carton sealing machine according to claim 7, further comprising: 3 and 64. 10 means 63 for converting the angular position;
64 is a locking screw 63 for the support pivot 60 inserted into the arcuate window 64 of the casing 1;
An automatic taping device for a carton sealing machine according to claim 9, characterized in that the automatic taping device comprises: